Overview

The Triconex 3721 is an industrial analog interface module engineered for high-availability control and safety applications. Designed for integration into Triconex fault-tolerant systems, the module performs real-time acquisition and conversion of process variables from field instruments, ensuring dependable operation under demanding conditions.

Through its three independent channels and median-value voting mechanism, the 3721 maintains data integrity even in the presence of hardware failures. This architecture makes the module particularly suitable for SIL-rated process protection systems used in continuous-process industries.

Features

Fault-Tolerant Signal Processing

Three independent channels enhance operational reliability.

Differential Input Technology

Provides excellent immunity to electrical noise and interference.

Fast Response Performance

Processes input data with a 10 ms update rate.

Online Diagnostics

Supports fault indication and continuous module self-monitoring.

Hot-Spare Capability

Allows maintenance and replacement with minimal interruption. 

Specification	Details
Product Name	Triconex 3721
Product Type	Analog Input Module
Manufacturer	Triconex
Parent Company	Schneider Electric
Series	Tricon System
Architecture	Triple Modular Redundancy (TMR)
Input Channels	32 Differential Inputs
Input Signal Range	0 to 5 VDC or -5 to +5 VDC
Resolution	Programmable 12-bit / 14-bit
Input Update Rate	10 ms
Overvoltage Protection	150 VDC / 115 VAC Continuous
Operating Temperature	-20°C to +60°C
Installation	Tricon Chassis
HS Code	8538909190
Weight	Approx. 1.36 kg
Country of Origin	United States
Condition	Brand New & Original
Availability	In Stock
Shipping	Worldwide Delivery
Warranty	12 Months

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